Logic System Timing Issues

[SWAN]

Hi there,

 

Im having Midi vs Logic timing problems....

 

It seems that when I have my Delay Plugin settings set to ALL - it puts my system out of sync - the Midi is fired ahead and too early.....however when PDC is set to Audio and Inst, or OFF the MIDI timing is ok....

 

However I have used Midi and PDC ALL before ok - so Icant work out what the issue is...?

 

Also - if I route audio into my Saffire it is in time - I can mix with the Saffire mixer program. However - if I put it thru the External Instrument - again - out of time! There is loads of latency......? Am I missing a trick here?

 

I use:

 

Logic Pro 7.2.3

Mac Pro

Motu Midi interface

Saffire LE

Liquid Mix (hence PDC)

 

So any advice on the Midi timing and External Instrument very welcome!

 

UPDATE

 

I found A user on here who had a similar problem-however reducing my IO Buffer to 64 didnt help.

 

I went back to my machine-and opened an old song - its timing was tight WITH MIDI and PDC?! So one of my songs has fine Midi timing - others have problems with PDC.....? I dont get it